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Use a slice pattern to neaten a condition.

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This commit is contained in:
Nicholas Nethercote 2023-10-26 14:51:26 +11:00
parent 531b38ac23
commit dcb72e705f
1 changed files with 3 additions and 8 deletions
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11
compiler/rustc_ast_passes/src/feature_gate.rs
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@ -199,17 +199,12 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
}
}
if !attr.is_doc_comment()
&& attr.get_normal_item().path.segments.len() == 2
&& attr.get_normal_item().path.segments[0].ident.name == sym::diagnostic
&& let [seg, _] = attr.get_normal_item().path.segments.as_slice()
&& seg.ident.name == sym::diagnostic
&& !self.features.diagnostic_namespace
{
let msg = "`#[diagnostic]` attribute name space is experimental";
gate_feature_post!(
self,
diagnostic_namespace,
attr.get_normal_item().path.segments[0].ident.span,
msg
);
gate_feature_post!(self, diagnostic_namespace, seg.ident.span, msg);
}
// Emit errors for non-staged-api crates.